Lodging Resistance Related to Root Traits for Mechanized Wet-Seeding of Two Super Rice Cultivars |
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Authors: | Zhang Minghua Mo Zhaowen Liao Juan Pan Shenggang Chen Xiongfei Zheng Le Luo Xiwen Wang Zaiman |
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Institution: | 1.Key Laboratory of Key Technology on Agricultural Machine and Equipment / College of Engineering, South China Agricultural University, Guangzhou 510642, China;2.College of Agriculture, South China Agricultural University, Guangzhou 510642, China;3.School of Engineering, Jiangxi Agricultural University, Nanchang 330045, China |
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Abstract: | Mechanical hill wet-seeded rice machine is beneficial for establishing and growing uniform rows of seedlings. However, there is limited knowledge regarding the effects of the establishment of furrows on growth, lodging and yield, and their relationships with root traits. In this study, field experiments were conducted during 2012 and 2013 using two super rice varieties (hybrid rice Peizataifeng and inbred rice Yuxiangyouzhan) under three furrow establishment treatments (T1, both water and seed furrows were established by the machine; T2, only seed furrows were established by the machine; and T3, neither water nor seed furrows were established by the machine). Lodging index, lodging-related traits, grain yield, above-ground dry weight and root traits were measured. The results showed that the lodging index was significantly affected by the treatments with furrows (T1 and T2). The strongest lodging resistance was detected in the mechanical hill wet-seeded rice with furrow treatment (T1) in both 2012 and 2013. Lodging resistance was strongly related to the breaking resistance. No significant difference was found in grain yield or dry weight of the mechanical hill wet-seeded rice. Therefore, the mechanical hill wet-seeded rice with furrow treatment increased rice lodging resistance, which was related to root traits. |
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Keywords: | seed furrow grain yield lodging resistance root trait mechanical wet-seeded rice |
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